#version 320 es
#ifdef GL_ES
	precision highp float;
#endif
in vec2 iVertex;
uniform float uY;

uniform mat4 uMVP;

out float posZ;

void main()
{
	posZ = iVertex.y;
	gl_Position =  uMVP * vec4(iVertex.x, uY, posZ, 1.0);
}